The DP-1001 silicone adhesive contains an amber colored polyimide film support layer that provides dimension stability when removing the release liner and installing the gasket strips. Photo courtesy of Stockwell Elastomerics, Inc.

Stockwell Elastomerics is producing slit-to-width rolls to support the need for high-performance silicone sponge and silicone foam gasketing

PHILDADELPHIA—Stockwell Elastomerics reported that it is producing new silicone sponge and silicone foam gasket tapes that have a DP-1001 silicone adhesive backing and are suited for applications subject to temperature extremes.

Slit-to-width rolls of the gasket tapes address the need for high-performance silicone sponge and silicone foam gasketing that, with proper deflection, seals out rain while withstanding outdoor conditions and temperature extremes, the company said in a release.

Three gasket tape products — R10470M red/orange closed cell silicone sponge, BF-1000 white, low density silicone foam, and HT-800 red, medium density silicone foam — are initially offered with DP-1001 silicone adhesive.

Customers may request a complimentary sample roll of gasket tape with DP-1001 adhesive to evaluate the adhesive properties, the company said.

The DP-1001 silicone adhesive contains an amber colored polyimide film support layer that provides dimension stability when removing the release liner and installing the gasket strips. The polyimide film layer improves the shelf life of the silicone adhesive backing by preventing migration of the adhesive into the silicone sponge or foam. The polyimide film also withstands a temperature range of -100°F to +500°F, thereby not limiting the performance of the silicone gasket in extreme temperature conditions. The DP-1001 silicone adhesive is 0 .005 inch thick and has an easy-peel release liner to aid installation, the company said.

“Gasket tape with DP-1001 film supported silicone adhesive provides our customers with high performance silicone sponge and silicone foam gasketing in tape form that can withstand extreme temperatures,” said Stockwell Elastomerics President Bill Stockwell, in the release. “Further, the polyimide film support and easy-peel release liner allows for easier installation than other legacy silicone sponge gaskets with silicone adhesive backing.”

The three gasket tape products have been specified for long-term sealing of outdoor enclosures, industrial ovens and dryers, and ventilating and airflow applications subject to temperature extremes.

R10470-M closed cell silicone sponge, provided by Saint-Gobain, is UV resistant, is reported to provide long service life in rugged conditions, and meets ASTM D6576, Type 2, Grades B and C. The BF-1000 low density, open cell silicone foam, provided by Rogers Corporation, passes the UL 94V-0 flame rating and is frequently used for air diverting and dust sealing. The HT-800 medium-density, closed cell silicone foam is also provided by Rogers Corporation. It passes the UL 94V-0 flame rating and UL 50E recompression test, and is capable of weather sealing when deflected at 35 to 65 percent.

Any of these gasket tape products can be die cut or water jet cut into custom gaskets if slit-to-width roll materials are not suitable for a sealing requirement. The most frequently specified gasket tape roll widths are 0.500 inch, 0.750 inch, 1.00 inch,  and 2.00 inches wide. Any width over 0.375 inch is available in custom slit rolls, the company said.

Stockwell Elastomerics is an ISO 9001:2015 registered company with that provides fabrication and molding of gaskets and pads using silicone rubber, fluorosilicone, and similar high performance elastomers. The company has on-site production capabilities for adhesive lamination, slitting, die cutting, water jet cutting, and custom molding.

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